Even though temperatures have been above average the last week, the month of September brings significant temperature changes during an average year.

On average, the high temperature on Sept. 1 is 90 degrees. By the end of the month, the average high temperature for Oklahoma City falls down to 79 degrees.

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When it comes to low temperatures, Sept. 1 starts with 68 degrees on average and by Sept. 30, the average low temperature for Oklahoma City is 57 degrees. Click the image above to see the average change in temperatures for Oklahoma City during September.

Even though cooler weather is expected in September, the summer heat can linger. On Sept. 30, 1977, the high temperature for Oklahoma City hit 100 degrees. That was the latest 100 degree high temperature ever in Oklahoma City.